What does sinus bradycardia otherwise normal ECG mean?
In sinus bradycardia, the node fires less than 60 times per minute. Bradycardia means a slow heartbeat. In sinus bradycardia, the heartbeat is starting in the normal part of the electrical system, the SA node, but the beat is slow. Many adults and children have sinus bradycardia that does not cause symptoms.
Why would sinus bradycardia be a normal finding in a patient?
Sinus bradycardia (SB) is considered a normal finding in the following circumstances: During sleep. Well-trained individuals display SB at rest due to high vagal tone. These individuals have developed a highly efficient left ventricle, capable of generating sufficient cardiac output at low heart rates.
Does bradycardia show up on ECG?
Because an ECG can’t detect bradycardia unless the slow heartbeat occurs during the test, your health care provider might recommend a portable ECG device.
When is bradycardia normal?
Having bradycardia (say “bray-dee-KAR-dee-uh”) means that your heart beats very slowly. For most people, a heart rate of 60 to 100 beats a minute while at rest is considered normal. If your heart beats less than 60 times a minute, it is slower than normal.
Is 55 heart rate too low?
For most people, a heart rate of 60 to 100 beats a minute while at rest is considered normal. If your heart beats less than 60 times a minute, it is slower than normal. A slow heart rate can be normal and healthy. Or it could be a sign of a problem with the heart’s electrical system.
What is the prognosis of sinus bradycardia?
Sequelae of sinus bradycardia are related to its underlying etiology, including the following: In patients who present with toxic exposure, the prognosis is good once the offending agent has been removed. Patients with sick sinus syndrome have a relatively poor prognosis, with 5-year survival rates in the range of 47-69%.
What are the causes of sinus bradycardia?
Some common causes of sinus bradycardia include rigorous physical exercise, irregular sleep patterns, hypothermia, and the use of some medications. Aside from a rather slow heartbeat, some patients also experience additional symptoms such as lightheadedness, chest pain, and shortness of breath.
What conditions can cause sinus bradycardia?
Causes of pathophysiologic sinus bradycardia include: Advanced age Problems with the SA node (sick sinus syndrome) Inflammatory heart conditions, like pericarditis or myocarditis Heart conditions that exist at birth (congenital) Increased pressure inside the head (for example, in an injury to the brain) Heart attack (myocardial infarction) Obstructive sleep apnea
What are the symptoms of severe sinus bradycardia?
Sometimes, sinus bradycardia can cause symptoms, including dizziness, fatigue, and fainting . If you experience these symptoms, see your doctor. They can work with you to diagnose sinus bradycardia and develop a treatment plan, if needed.